Leather in perfection. This iPhone X and iPhone Xs detachable bookwallet case is made out of tiguan cow leather. Every case is different and has a unique design, this is due to the different patterns in the tiguan leather. The case is designed in Holland and is handmade in Europe. The cases are well finished, with a lot of features for daily usage. Both the bookwallet case and the backcover case gives your phone all-round protection.